Adjustable dog stop release for turret lathes



0ct. 2, 1945. L. P. TAKAC, JR A 2,336,014

I' y ADJUSTABLE VDOG STOP RELEASE FOR TURRET LATHES Filed May 25,- 1944 Patented Oct. 2, 1945 ADJUSTABLE DOG sroPnnLEAsE TUnRET LA'rnEs I Foe A y p Louis lI"au`l Takac, Jr.,'Chicago, '111. Appiicatin May 25, 1944, ,seriallNarssmszi This `invention relates to attachments forxturret `lathes and the like and more .particularly to an improvement in an adjustable'dogastoprelease which in the present instance is shown in connection with .a turret lathe. rL'he `turret lathe is suitable for any job in which anurnberof operations are to beperformed on the work and each of whichy requires a tool ,of different shape `or cuttingfedge. Each tool is held on a different sideof a turret which ismounted =on.a carriage and which, after the carriage returns from one operationen the work, can be swung with anew tool vinto place for the next operation.

However, when the carriage on the turret lathe is setup `for a certain clip onthe cross-feed'hand wheel rit willfunction only on `that particular clip. `In the -event that Ythe operator desires to passfthis particular clip4 and go to the next, using a-'newltooL it'is ordinarily necessary to holdzthe cross-feed engagement lever until `the cross-feed Fig. 5.is a view similarto Fig. 4 but with-the control llever `in an alteredor outer .inoperative position,.and, I I I a ,rliga isa .vertical sectional vieWfthroughFigA on the line 6 6. t t

Like .reference characters denote 4corresponding parts throughout the several aviews.

The reference numeral I denotes fthe ,com- .pound of a turret latheconsisting of the carriage 2 arranged upon Ithe Ways 3*-and vprovided :with thecross-feed hand wheel .diandslide 5 provided with tool post .6 said carriage V2 carrying theusual spring-pressed plunger 1 yieldingly retained fin raised `positionto keep Vthe tool post engaged but which is depressed in conventionalmanner Iwhen i it is desired to disengage the tooLpost.

hand Wheelrrides throughth'e set up on the cross 1 `A slide carriage unit. It is the purpose of the instant invention to make this unnecessary. The carriage is now set up to disengagev the cross-feed engagement lever as usual at the proper time or point and if more than one clip is used, there are six clips on the graduated dial on the cross-feed hand wheel as a rule, the cross-feed hand Wheel will not disengage after engagement with any one clip but will travel successively from one to the next or in the order of the set up.

A further object of the invention is to provide an adjustable dog stop release adapted for ready application to the compound -or slide carriage of a turret lathe, or the like, that is simple in .construction, of few parts, positive and efficient in operation, that is readily set up to conform to the clip sei; up and that is durable in construction and not likely to get out of order. With the foregoing and other objects in View the invention consists in the combination and arrangement of parts to be hereinafter fully described, pointed out in the claims and illustrated in the accompanying drawing which forms a part of this patent and in which- Fig. 1 is a view in elevational perspective of a portion of a turret lathe illustrating the application of the instant attachment.

Fig. 2 is a view in front elevation of the attachmeni; per se, showing several adjustable units in use, the hand rods being shown in section.

Fig. 3 is an inverted plan view of the attachment shown in Fig. 2.

Fig. 4 is a vertical cross sectional View through Fig. 2 on the line 4 4, enlarged, the hand lever being shown in inner or operative position.

To provide means for `automaticallydisengaging the tool post to-,positiona newtool for operation upon the work, ,or to `positiontwo or more tools successively orraccordingto the carriageset up I provide an elongated Vfrar`ne,right angledin cross section, havinga vertically disposed side portion 8 and a horizontally disposed portion 9, the latter being formed with a longitudinally extending slot I0 extending from end to end, the side 8 being secured by fastening means II to one side wall of the slide 5 with the portion 9 extending outwardly therefrom and from the lower edge of the sideportion 8.

Slidably disposed in the said slot I0 is the stem I I I of an inverted T-shaped shoe I2 the side faces I3, I4 of which are beveled for supporting and sliding engagement with the trough-shaped piece I5 closed at its inner end, the inner faces of the side walls of which are beveled complementary to said shoe faces to form a mortise-tenon t, said shoe being retained in position by a screw I 6 the head of which is countersunk in said piece, the stem of said screw extending through said stem I I I and through a block I 'I slidably disposed upon the slotted portion of said frame, said screw being 4provided with the nut I8 for releasably locking said block in adjusted position upon said frame.

Secured to or made integral with the lower face of the base of the piece I5 is a stub-finger I9 the lateral faces of which are beveled downwardly, said stub-iinger being disposed at substantially the longitudinal central portion of said.

piece and extending axially of same, said piece I5 being provided also upon its lowermost face with a handle 20 extending outwardly away from the side portion 8 and provided terminally with a head or hand grip ZI to facilitate movement of said piece I5 relative to the shoe I2.

To assemble this adjustable dog stop release the piece I5 is applied to the shoe I2 and the stem `corresponding to the one described are provided upon the frame 8, 9 as shown in Figs.,2 and 3 in positionscorresponding to said clips. It will be noted that the piece I5 is adjustable to two important positions.

An inner position is shown in Fig. 4 wherein the stub-finger I9 moves with the frame 8, 9,

being locked by nut I8 in adjusted position, along a path in which is disposed the plunger 1 forv operating contact therewith and when this takes place said plunger is depressed and the tool post released, as shown in Fig. 6. When, however, contact with said plunger I is not desired the .piece I5 is moved by handle 20, 2l to outer position to travel a path free from said plunger 1, as shown in Fig. 5. Obviously the several units ycarried by a frame 8, 9 may be disposed in operative or inoperative positions, just described, to release or ignore the tool post as desired.

While I haveV described in considerable detail theY illustrated embodiment of myV invention it will be understood by those skilled in the art that variations and modiiications may be made without departing from the spirit of the invention. I do not therefore desire to be limited to the form shown and described, but claim as myinvention all embodiments thereof falling within the scope of the appended claims.

What is claimed is:

l. As an article of manufacture, an elongated frame right-angled in cross section, one side of saidv frame having therein an elongated slot, an inverted T-shaped shoe having its stem slidably disposed in said slot and its crosshead therebeneath, a screw having its head imbedded in said crosshead and its shank extending through said stem, a block upon said screw received upon said slotted frame portion, a nut for said screw, a trough-shaped piece slidably engaging the crosshead of said shoe immediately beneath said slotted frame portion,l a stub-finger carried by said piece, and ka handle for said piece.

2. In an adjustable dog stop release for turret lathes and the like having a control plunger,

- -an elongated frame substantially right-angled in cross section, one side of said frame being sebcured tothe lathe compound, the other side of said frame being slotted longitudinally, its slot being positioned above the lathe plunger, a shoe having one portion slidably disposed in said slot with a portion disposed immediately therebeneath, a screw extending through said shoe and slot and thereabove, a block upon said screw slidable upon said frame, a nut for said screw, a. trough-shaped piece slidably carried by said shoe, a stub-finger carried by said piece upon its lower-face, and aA handle for said piece to dispose said stub-finger in and out of line with said latheV plunger.

3. In an adjustable dog stop release for turret lathes having a control plunger, a frame secured to the lathe compound and extending outwardly beyond the plunger and above same, said frame being slotted in line with said plunger, a shoe slidably received in said slot with a portion immediately therebeneath, a screw extending through said shoe and slot and thereabove, a nut for said screw, a piece slidably carried by said shoe immediately beneath said frame, a stubfinger carried by said piece for movement therebeneath and for contact with said plunger in one position of said piece, and a handle for adjusting said piece.

" LOUIS PAUL TAKAC. JR. 

